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Finding the Fourth Proportional to 907,589.80, 1,361,238.90 and 276,356.80

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Solution

The fourth proportional to 907,589.80, 1,361,238.90 and 276,356.80 is: 414,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,589.80 : 1,361,238.90 = 276,356.80 : x
  2. Step 2: Convert to fraction form
    907,589.80/1,361,238.90 = 276,356.80/x
  3. Step 3: Cross multiply
    907,589.80x = 1,361,238.90 × 276,356.80
  4. Step 4: Simplify right side
    907,589.80x = 376,187,626,439.52
  5. Step 5: Solve for x
    x = 376,187,626,439.52/907,589.80
  6. Step 6: Final answer
    x = 414,490.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.